WorldViz User Forum - Using 2 slider joints to move on a plane

Hey there,

I'm working on a project where I need to use a portalcrane where the mounted object is moved by grabbing it with the vizconnect grabber and the parts of the crane should move too. I want to use the built-in physics engine, so i tried to use multiple joints to connect the crane parts, but I didn't figure out yet, how I could use 2 slider joints to get the crane moving in the room.
Is there a way to do this? This is an example code I use for testing purposes:

Code:

# -----------------------------------------------------------------------

# Options



CYCLES_PER_SEC = 0.05  # Frames

viz.setMultiSample(4)  # Multisampling

viz.setOption('viz.max_frame_rate', 60)  # Avoid flickering

viz.vsync(viz.OFF)  # V-Sync

viz.collision(viz.ON)  # Viewport Collision

viz.phys.enable()  # Physics Simulation

viz.setOption('viz.model.cache', viz.CACHE_CLONE)

vizconnect.go(r'../vizconnect_files/keyboard.py') # Standard Vizconnect Keyboard Setting



# -----------------------------------------------------------------------

# Loading of Objects

grabber = vizconnect.getRawTool('grabber')

position = [5.0, 0, 0]

room = viz.add('lab.osgb')  # Room is loaded

room.collideMesh()  # Room gets Collision



box = vizshape.addBox(size=[12.8, 0.2, 0.2], pos=[0, 5.5, position[2]])

box.collideBox()

box_joint = viz.phys.addSliderJoint(box, None, pos=[0, 5.5, position[2]], axis0=(0, 0, 1))

box_joint.setAxisLimit(0, -6, 6)  # Limit sliding distance

box_joint.setAxisBounce(0, 0)  # Change end bounce properties



rope = vizshape.addBox(size=[0.075, 3, 0.075], pos=[position[0], 3.9, position[2]])

rope.collideBox()

rope_joint = viz.phys.addSliderJoint(rope, None, pos=[position[0], 3.9, position[2]], axis0=(1, 0, 0))

rope_joint.setAxisLimit(0, -12.8 / 2 - position[0],12.8 / 2 - position[0]) # Limit sliding distance

rope_joint.setAxisBounce(0, 0)  # Change end bounce properties



# rope_box_joint = viz.phys.addFixedJoint(box, rope)



grabber.addItems([rope])